A defiant threat by Elon Musk warning that federal employees will be given "a second chance" to respond to his email asking them to justify their jobs or risk termination is likely to spark another round of confusion across the U.

Elon Musk on Monday said Saturday's email "was basically a check to see if the employee had a pulse and was capable of replying to an email."

Many federal employees across the country are back at agency offices under President Donald Trump's return-to-office mandate